AccuMac AM1950 Manuale d'uso - Pagina 6

Sfoglia online o scarica il pdf Manuale d'uso per Termometro AccuMac AM1950. AccuMac AM1950 10. Standard platinum resistance thermometer

AM1960/1950 Standard Platinum Resistance Thermometer User's Guide

3 General Operations

The AM1960/1950 is equipped with a four-wire cable (see Figure 1).

Four lead wires are used to cancel lead wire resistance. For best

results, the readout device should be equipped to handle four-terminal

resistors. The lead wires can be distinguished by insulation colors.

Lead wire pairs attached to each end of the sensor are identified by

red/black and white/blue insulation.

White

Yellow

AccuMac recommends 1mA as drive current to ensure the best

measurement.

To achieve the best accuracy, allow sufficient time for SPRT to

stabilize before taking the readings.

Stem effect can cause measurement errors due to heat lost or gained

by the sensing element through the thermometer stem. To minimize

the error, appropriate immersion depths are required. A practical way

to determine the minimum immersion depths is to change the depth

Rev. 201609V3

Figure1

Red

Black

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